HELIX. 



Plate CXXIII. 



Species 734. (Mas. Benson.) 



Helix oxytes. Hel. testa ampUter umbillcald, clepressd, 

 letdicidari, ferrugineo-varned aiitfubescmte, arcua/iin 

 tenue plicalo-driutd ; spird convexd, sutitrk non ex- 

 cavatk ; anfraciihun quinqut ad sex, plamiUttis, ultimo 

 acute carhmto ; wnbilico late perspeclivo, anfractm 

 usque ad apkem exhibente ; aperlurd subquadralo- 

 luiiari ; peristomale paidulum rejtexo. 



The sUAiiP-EDGED Helix. Shell largely umbilieated, 

 depressed, lenticular, rusty flosli-colour or ycllowisli, 

 arouately finely plicately striated ; spire convex, with 

 the sutures not excavated ; whorls five to six, rather 

 flattened, the last sharply keeled ; umbilicus broadly 

 perspective, exhibiting the whorls as far as the apex ; 

 aperture somewhat squarely lunar ; lip a little re- 

 flected. 



Benson, Journ. Asiatic Soc. of Calcutta, 1836. vol. v. 

 p. 351. 



Ilah. East Frontier of Bengal. 



A fine large sharply keeled species, remarkable for its 

 large and deep perspective umbilicus. 



Species 735. (Fig. o, A, Mus. Benson.) 



Helix tiiyueus. Hel. tesld profunde umbilicaid, sinis- 

 trali, olicaceo-conied, infra carinam pallidi fusco-fas- 

 ciatd, solidiusculd, arcualim subtilissime striatd ; spird 

 parum convexd, apice obtusd ; anfraclihus quinque, 

 planulalis, ultimo carinato, deimle rotundato ; aper- 

 turd subquadrato-lunari ; peristomate paululitm incras- 

 salo, rejtexo, cameo, maryinibus connivenlibiis. 



The shield Helix. Shell deeply umbilieated, sinistral, 

 olive-horny, faintly banded with brown beneath the 

 keel, rather solid, arcuately very finely striated ; s))ire 

 but little convex, obtuse at the apex ; whorls live, 

 flattened, the last keeled, then rounded ; aperture 

 somewhat squarely luuar; lip a little thickened, di- 

 lated, flesh-coloured, with the margins approximated. 



Benson, Ann. and Jlag. Nat. Hist. 1852, vol. ix. 



Ilab. Southern India ; Jerdon. 



A rather solid reversed species, of a dull olive hue, faintly 

 banded below the keel, w^ith a deep, but not broad, um- 

 bilicus. 



Species 736. (Fig. a, b, Mus. Benson.) 



Helix ampulla, llel. testa imperforatd, oblique ovaid, 

 tenui, ralde injiatd, intense virente-oticaced, corned; 

 spird pared, obtusd; anfractibus Iriius, primis duobut 

 con/ertim pUcato-coslellatis, ultimo raJiatim et ditari- 

 catim anguhso-strialo et mallealo, costeltis ecanidis ; 

 aperturd perampld ; peristomale tenui, marginibus ap- 

 proximatis. 



The flask Helix. Shell imperforated, obliquely ovate, 

 thin, very much inflated, dark grccnish-olive, honiy ; 

 spire small, obtuse ; whorls three, the first two finely 

 and closely plicately ribbed, the last nuiiatcly and 

 divaricately striated and indented in a wrinkled man- 

 ner, ribs faded away ; aperture very large ; lip thin, 

 margins approximated. 



Benson, Ann. and Mag. Nat. Hist. 1850, vol. v. p. 213. 



llab. Khoonda Pass, Nilgherrics ; Jerdon. 



This very interesting and distinct species has the ob- 

 long-ovate inflated form of II. magnijica, with the ti-xfuri- 

 and external sculpture of the South African //. Cojjra, 

 save that in the last whorl the riblcts disappear and the 

 surface is indented and cross-veined with broad superficial 

 wrinkled striae. It is a remarkable species both as re- 

 gards its specific and its typical character. 



Species 737. (Mus. Benson.) 



Helix CYSTIS. Hel. testa subangusle umbiticatd, sinittrali, 

 sordide oliraced, apicent cersiis carneo-liHcId, arcuatiat 

 tenui-striatd ; spird concexd, suhobtutd ; ai^ractibiu 

 quinque, plano-concexis ; tiperliird lunato-circulari ; 

 peristomale paululum rejlexo, marginibus connivtrntibut. 



The bladder Helix. Shell somewhat narrowly um- 

 bilieated, sinistral, dirty-olive, flesh-tinged towards 

 the apex, arcuately finely striated ; s|)ire convex, 

 rather obtuse ; whorls five, flatly convex ; aperture 

 lunar-circular ; W]) a little reflected, with the margiiu 

 approximating. 



Benson, Ann. and Mag. Nat. Hist. 1852, vol. ix. 



Hab. Nilgherrj- Mountains ; Jenlon. 



A large reversed dirty-olive shell, flesh-tinged towards 

 the apex, covered with a vcrj- thin darker olive epidermis. 



August, 1852. 



